Combination lock



FIG. 1 is a front view of combination lock showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a perspective view showing the present lock in an unlockstate.

The ornamental design for a combination lock, as shown and described.